We had been staying in this apartment for 43 days, and unfortunately, I must admit that it's not suitable for long-term accommodation. The two main reason are pests (cockroaches) and poor quality of Wifi connection (if you need to conduct/receive video calls you can't do it because of the Internet speed, but Youtube was working generally not bad). Sometimes there was really bad odour from the bath and sink, but we had managed to fix it on our own.
In addition, the apartment should be cleaned and prepared for new guests better.
The good thing is the location is absolutely nice and convenient, it's located about 2 min to BTS station and it usually took us no longer than 20 min to get to the city center. The washing machine is on the balcony and works pretty well. The window view from 15th floor is also amazing.